I keep getting a message
That’s because your reported Y axis position is too close to the allowed limit. Go to the move panel and click get position. If the Y number is high, type a low number in the move to box, if the number is low, type a high number (just under your machine limit) in the move to box. That should get you through your testing. Then if you plan on starting with a center origin, type 1/2 of your machine limit in the move to box.